We are offering an extraordinary and rare raw ParaÂba tourmaline weighing an impressive 3,005 carats (601 grams). This gemstone, renowned for its unique neon-blue to greenish hue, represents the epitome of exclusivity and rarity in the gemstone market.
Details of the Gemstone:
Quantity: 1 Gem
Weight: 3,005 CTs (601g)
Color: Neon blue, with greenish undertones
Density: 3 - 3.2 g/cm³
Refractive Index: 1.614 - 1.666
Chemical Composition: Complex borosilicate with copper (Fe, Cu, Mn, Al, Si)
Crystal Structure: Trigonal
Luster: Vitreous
Fracture: Uneven, conchoidal, typically elongated crystals with triangular sections and rounded faces, clear parallel striations
Fluorescence: None
Hardness: 7 - 7.5 on the Mohs scale
Lapidation Type: Uncut, raw form
Negotiable sale value
GIA Certificate
Appraised value after polishing: US$60,000,000.00
FOB
Gem location: Sao Paulo, Brazil
Payment methods: Letter of credit or debit card
Rough Tourmalines
Supplier: Rough precious and semi precious stones, including aquamarine, blue agate, blue corundum, garnet, rhodolite, jasper, morganite, quartz, ruby, sapphires, tourmaline.
Nice parcel of afghans blue tourmaline for sale. Contact us for more details and pictures..
Supplier: Gemstones
Services: Manufacture and exporters, importers
Buyer: Precious and semi precious and color gemstones
Supplier: Gemstone
Tourmalines,not very clean but beautifulgreen colour Vary from very small to big
Supplier: Gemstones
Black Tourmaline Rough size 100g 4kg India origin Price 6 usd per kg cif India Categories: Rough, Tourmaline Gemstone Black Tourmaline Shape Rough Location India Lot-No blacktour Origin India Size 100g -4kg
We have different color faceting rough tourmaline from famous Afghanistan mine at good price
